Untersuchungen über die Konkurrenzwirkung von Gehölzwurzeln auf Ackerkulturen Lore Steubing OriginalPaper Pages: 1 - 25
Observations on mixed cultures of nitrosomonas and heterotrophic soil bacteria K. Gundersen OriginalPaper Pages: 26 - 34
The liberation of amino acids and reducing compounds by plant roots H. KatznelsonJ. W. RouattT. M. B. Payne OriginalPaper Pages: 35 - 48
The effect of light upon the roots of beech and its surface population J. L. HarleyJ. S. Waid OriginalPaper Pages: 96 - 112